Dehumidifying device for variable pitch system

Abstract

The dehumidification device comprises a shell, a ventilation groove is formed in the bottom of the inner wall of the shell, cover bodies are fixedly connected to the two sides of the bottom of the inner side face of the shell, and clamping grooves are formed in the tops and the bottoms of the inner side faces of the cover bodies. According to the dehumidification device for the variable pitch system, through the arrangement of an activated carbon adsorption plate, an induced draft fan, an electric heating net plate, a hose and an air outlet hole, external air is extracted into the device through the induced draft fan, moisture in the air is adsorbed through the activated carbon adsorption plate, the moisture degree of the air is well reduced, and the primarily dehumidified air enters an air pipe; air is heated to a proper temperature under the action of the electric heating screen plate and finally conveyed into the shell through the air outlet holes in the surface of the hose, so that the dryness of the air in the shell is effectively improved, dry air can be better conveyed to an area where humid air is gathered and difficult to treat, dehumidification is more uniform, the dehumidification efficiency is improved, and the energy consumption is reduced. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification devices, in particular to a dehumidification device for a variable pitch system. Background Art

[0002] Pitch system dehumidification is a method of dehumidifying the pitch system through a special dehumidification device. As one of the core parts of the control system of a large wind turbine, the pitch system plays a very important role in the safe, stable and efficient operation of the unit. A large number of electrical components and cables are installed inside the pitch system. In order to prevent the electrical components from getting damp, dehumidification work is required.

[0003] After searching, Chinese Patent Publication (Announcement) No. CN206276211U discloses a dehumidification device for a variable pitch system, which corresponds to the variable pitch system body and is characterized by: comprising an outlet pipe arranged on one side of the variable pitch system body and an inlet pipe arranged on the other side of the variable pitch system body; a protective cover is arranged on the outlet pipe; a shell is movably mounted on the inlet pipe, and the shape of the shell matches the inlet pipe; a dehumidifier is arranged in the shell, and a variable air inlet device is arranged on the outer end face of the shell. The utility model has a reasonable design and a simple structure. It adopts a dehumidification device with a variable air inlet installed on the inlet pipe, and adopts different air inlet effects according to the actual environment and seasons, so that power can be saved and the best dehumidification effect can be achieved without wasting power. It is suitable for various environments and effectively protects the use of the variable pitch system.

[0004] Although the above patent can dehumidify the variable pitch system, it can only dehumidify locally and cannot dehumidify the variable pitch system evenly, resulting in a low dehumidification range and certain limitations in use. Therefore, it is necessary to design a dehumidification device for a variable pitch system to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a dehumidification device for a variable pitch system, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A dehumidification device for a variable pitch system comprises a shell, a ventilation groove is provided at the bottom of the inner wall of the shell, a cover body is fixedly connected to both sides of the bottom of the inner side surface of the shell, a card slot is provided at the top and bottom of the inner side surface of the cover body, an activated carbon adsorption plate is card-connected inside the card slot; a first support plate is fixedly connected to the middle of the inner side surface of the cover body, an induced draft fan is fixedly connected to the inner side surface of the first support plate, an air duct is fixedly connected to the outer surface of the cover body, electric heating mesh plates are fixedly connected to both sides of the inner side surface of the air duct, a hose is fixedly connected to the upper surface of the air duct, and an air outlet is provided on the front side of the hose.

[0008] In order to facilitate the fixing of the hose, as a dehumidification device for a variable pitch system of the utility model, a pipe clamp is fixedly connected to the inner side surface of the shell near the hose, and the pipe clamp is movably connected to the hose.

[0009] In order to achieve the effect of preventing dust from entering the ventilation slot, as a dehumidification device for a variable pitch system of the utility model, a groove is provided on the outer surface of the shell close to the ventilation slot, and a first dustproof mesh plate is movably connected to the inside of the groove by bolts.

[0010] In order to achieve the effect of facilitating exhaust, as a dehumidification device for a variable pitch system of the utility model, an exhaust hole is opened on the upper surface of the shell, and a top seat is fixedly connected to the edge of the upper surface of the shell.

[0011] In order to achieve the effect of enhancing ventilation, as a dehumidification device for a variable pitch system of the utility model, a second support plate is fixedly connected to the middle of the inner side surface of the top seat, and an exhaust fan is fixedly connected to the lower surface of the second support plate.

[0012] In order to achieve the effect of dust prevention on the top, as a dehumidification device for a variable pitch system of the utility model, a placement groove is opened on the upper surface of the top seat, and a second dust prevention mesh plate is movably connected inside the placement groove.

[0013] In order to facilitate the installation and replacement of the second dustproof screen, the utility model is a dehumidification device for a variable pitch system. The top of the outer surface of the top seat is fixedly connected to a cylinder seat, the inside of the cylinder seat is slidably connected to a limiting plate, the upper surface of the limiting plate is fixedly connected to a plug rod, one end of the plug rod is fixedly connected to a pressure plate, and the outer surface of the plug rod is sleeved with a spring.

[0014] In order to facilitate opening and closing of the box door, as a dehumidification device for a variable pitch system of the utility model, both sides of the front side of the shell are hinged with box doors through hinges, and a transparent window is fixedly connected to the middle of the front side of the box door.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, through the arrangement of the activated carbon adsorption plate, the induced ventilator, the electric heating mesh plate, the hose and the air outlet, the induced ventilator draws external air into the device, the activated carbon adsorption plate adsorbs moisture in the air, and effectively reduces the humidity of the air. The air after preliminary dehumidification enters the interior of the air duct, and is heated to an appropriate temperature under the action of the electric heating mesh plate, and is finally transported to the interior of the shell through the air outlet on the surface of the hose, which effectively improves the dryness of the air inside the shell, so that the dry air can be better transported to the area where humid air gathers and is difficult to handle, the dehumidification is more uniform, the dehumidification efficiency is improved, and it is easy to use.

[0017] 2. In the utility model, through the arrangement of the first dustproof mesh plate, the exhaust holes, the exhaust fan and the second dustproof mesh plate, the first dustproof mesh plate will filter the dust and impurities in the air entering the inside of the device, and the multiple exhaust holes will facilitate the discharge of heat inside the shell to avoid the electrical components of the variable pitch system from being damaged by heat for a long time. The exhaust fan will speed up the circulation of hot air and can speed up the removal of moisture, while preventing the phenomenon that the temperature inside the shell rises sharply due to long-term blowing of hot air. The second dustproof mesh plate will block the top opening of the top seat to reduce the entry of external dust and impurities, and the dustproof effect is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the housing of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the air duct according to an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the top seat of an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the cartridge holder according to an embodiment of the utility model.

[0023] In the figure: 1. shell; 2. ventilation slot; 3. cover; 4. slot; 5. activated carbon adsorption plate; 6. first support plate; 7. exhaust fan; 8. air duct; 9. electric heating mesh plate; 10. hose; 11. air outlet; 12. pipe clamp; 13. groove; 14. first dustproof mesh plate; 15. exhaust hole; 16. top seat; 17. second support plate; 18. exhaust fan; 19. placement slot; 20. second dustproof mesh plate; 21. cylinder seat; 22. limit plate; 23. plug rod; 24. pressure plate; 25. spring; 26. box door; 27. transparent window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] like Figure 1-5 As shown, a dehumidification device for a variable pitch system comprises a shell 1, a ventilation slot 2 is provided at the bottom of the inner wall of the shell 1, a cover body 3 is fixedly connected to both sides of the bottom of the inner side surface of the shell 1, a card slot 4 is provided at the top and bottom of the inner side surface of the cover body 3, and an activated carbon adsorption plate 5 is card-connected inside the card slot 4; a first support plate 6 is fixedly connected to the middle of the inner side surface of the cover body 3, an exhaust fan 7 is fixedly connected to the inner side surface of the first support plate 6, an air duct 8 is fixedly connected to the outer surface of the cover body 3, electric heating mesh plates 9 are fixedly connected to both sides of the inner side surface of the air duct 8, a hose 10 is fixedly connected to the upper surface of the air duct 8, and an air outlet 11 is provided on the front of the hose 10.

[0026] During specific use, through the arrangement of the activated carbon adsorption plate 5, the induced draft fan 7, the electric heating mesh plate 9, the hose 10 and the air outlet 11, the obliquely arranged ventilation slots 2 facilitate the induced draft fan 7 to suck the external air into the interior of the housing 1, while reducing the entry of external dust. The cover body 3 is a trumpet-type opening structure, which can expand the suction effect of the induced draft fan 7. The activated carbon adsorption plate 5 is connected to the edge of the inner side of the cover body 3 through the card slot 4, which is convenient for installation and disassembly, and is convenient for replacement after long-term use. The moisture in the air entering the interior of the device is adsorbed by the activated carbon adsorption plate 5, which effectively reduces the humidity of the air inside the device. The air after preliminary dehumidification enters the interior of the air duct 8, and is heated to an appropriate temperature under the action of the electric heating mesh plate 9. Finally, it is transported to the interior of the housing 1 through the air outlet 11 on the surface of the hose 10, which effectively improves the dryness of the air inside the housing 1, thereby playing a dehumidification role. The hose 10 guides the dry air so that the dry air can be better transported to the area where the humid air gathers and is difficult to handle, making the dehumidification inside the housing 1 more uniform, improving the dehumidification efficiency, and being easy to use.

[0027] In this embodiment, a tube clamp 12 is fixedly connected to a side of the inner side surface of the housing 1 close to the hose 10 , and the tube clamp 12 is movably connected to the hose 10 .

[0028] During specific use, the tube clamp 12 is provided to limit and fix the hose 10 to ensure stability during use.

[0029] In this embodiment, a groove 13 is formed on one side of the outer surface of the housing 1 close to the ventilation slot 2, and a first dustproof screen plate 14 is movably connected to the inside of the groove 13 via bolts.

[0030] During specific use, by setting the first dustproof screen plate 14, the first dustproof screen plate 14 is movably connected to the inside of the groove 13 through bolts, so that dust and impurities in the air entering the inside of the device can be filtered.

[0031] In this embodiment, an exhaust hole 15 is opened on the upper surface of the shell 1 , and a top seat 16 is fixedly connected to the edge of the upper surface of the shell 1 .

[0032] During specific use, through the setting of the top seat 16, multiple exhaust holes 15 are evenly opened on the upper surface of the shell 1 in the form of a rectangular array, which is convenient for discharging the heat inside the shell 1 and avoiding the electrical components of the variable pitch system from being damaged by heat for a long time. The top seat 16 is used to support the ventilation elements of the device and expand the ventilation range of the exhaust fan 18.

[0033] In this embodiment, a second support plate 17 is fixedly connected to the middle portion of the inner side surface of the top seat 16 , and an exhaust fan 18 is fixedly connected to the lower surface of the second support plate 17 .

[0034] During specific use, by setting the exhaust fan 18, the exhaust fan 18 is fixed on the lower surface of the second support plate 17, which can speed up the circulation of hot air and the removal of moisture, and prevent the phenomenon that the temperature inside the shell 1 rises sharply due to long-term blowing of hot air.

[0035] In this embodiment, a placement groove 19 is formed on the upper surface of the top seat 16 , and a second dustproof screen plate 20 is movably connected inside the placement groove 19 .

[0036] During specific use, by setting the second dustproof mesh plate 20, the second dustproof mesh plate 20 is set inside the placement groove 19 to cover the top opening of the top seat 16, reduce the entry of external dust and impurities, and enhance the dustproof effect.

[0037] In this embodiment, a cylinder seat 21 is fixedly connected to the top of the outer surface of the top seat 16, and a limiting plate 22 is slidably connected inside the cylinder seat 21. A plug rod 23 is fixedly connected to the upper surface of the limiting plate 22, and a pressure plate 24 is fixedly connected to one end of the plug rod 23. A spring 25 is sleeved on the outer surface of the plug rod 23.

[0038] During specific use, through the setting of the pressure plate 24, the limit plate 22 and the plug rod 23 are slidably connected inside the cylinder seat 21, and the pressure plate 24 is pulled upward to facilitate the removal of the second dustproof mesh plate 20. When the second dustproof mesh plate 20 is placed inside the placement groove 19, under the elastic action of the spring 25, the plug rod 23 drives the pressure plate 24 to fix the second dustproof mesh plate 20, thereby ensuring stability during use and making installation and disassembly more convenient.

[0039] In this embodiment, both sides of the front side of the housing 1 are hinged with doors 26 through hinges, and a transparent window 27 is fixedly connected to the middle of the front side of the door 26 .

[0040] During specific use, through the setting of the box door 26, the box door 26 is hinged on both sides of the front of the shell 1 through hinges, which is easy to open and close, making it convenient for the staff to inspect and maintain the internal components of the shell 1. Through the transparent window 27, the staff can easily check the operating status of the variable pitch system inside the shell 1.

[0041] Working principle: During use, the inclined ventilation slots 2 facilitate the induced draft fan 7 to draw external air into the interior of the housing 1. The first dustproof mesh plate 14 reduces the entry of external dust. The cover body 3 is a trumpet-type opening structure to expand the suction effect of the induced draft fan 7. The activated carbon adsorption plate 5 is connected to the edge of the inner side of the cover body 3 through the card slot 4 to adsorb moisture in the air, which effectively reduces the humidity of the air inside the device. The air after preliminary dehumidification enters the interior of the air duct 8, and is heated to an appropriate temperature under the action of the electric heating mesh plate 9. Finally, it is transported to the interior of the housing 1 through the air outlet 11 on the surface of the hose 10, which effectively improves the dryness of the air inside the housing 1, thereby playing a role in dehumidification and making the dehumidification inside the housing 1 more uniform. The dehumidification efficiency is improved, the pipe clamp 12 limits and fixes the hose 10, and the multiple exhaust holes 15 facilitate the discharge of heat inside the shell 1 to prevent the electrical components of the variable pitch system from being damaged by heat for a long time. The exhaust fan 18 speeds up the circulation of hot air, which can speed up the removal of moisture and prevent the phenomenon that the temperature inside the shell 1 rises sharply due to long-term blowing of hot air. The second dustproof mesh plate 20 blocks the top opening of the top seat 16 to reduce the entry of external dust and impurities. The pressure plate 24 is pulled upward to facilitate the removal of the second dustproof mesh plate 20. When the second dustproof mesh plate 20 is placed in the placement groove 19, under the elastic action of the spring 25, the plug rod 23 drives the pressure plate 24 to fix the second dustproof mesh plate 20, and installation and disassembly are more convenient.

[0042] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dehumidification device for a pitch system, comprising a housing (1), characterized in that: A ventilation slot (2) is provided at the bottom of the inner wall of the shell (1); a cover body (3) is fixedly connected to both sides of the bottom of the inner side surface of the shell (1); a clamping slot (4) is provided at the top and bottom of the inner side surface of the cover body (3); an activated carbon adsorption plate (5) is clamped inside the clamping slot (4); A first support plate (6) is fixedly connected to the middle of the inner side surface of the cover body (3), an exhaust fan (7) is fixedly connected to the inner side surface of the first support plate (6), an air duct (8) is fixedly connected to the outer surface of the cover body (3), both sides of the inner side surface of the air duct (8) are fixedly connected to electric heating mesh plates (9), a hose (10) is fixedly connected to the upper surface of the air duct (8), and an air outlet hole (11) is provided on the front side of the hose (10).

2. A dehumidification device for a pitch system according to claim 1, characterized in that: A pipe clamp (12) is fixedly connected to a side of the inner side surface of the housing (1) close to the hose (10), and the pipe clamp (12) is movably connected to the hose (10).

3. A dehumidification device for a pitch system according to claim 1, characterized in that: A groove (13) is provided on one side of the outer surface of the shell (1) close to the ventilation slot (2), and a first dustproof screen plate (14) is movably connected to the interior of the groove (13) via bolts.

4. A dehumidification device for a pitch system according to claim 1, characterized in that: An exhaust hole (15) is provided on the upper surface of the shell (1), and a top seat (16) is fixedly connected to the edge of the upper surface of the shell (1).

5. A dehumidification device for a pitch system according to claim 4, characterized in that: A second support plate (17) is fixedly connected to the middle portion of the inner side surface of the top seat (16), and an exhaust fan (18) is fixedly connected to the lower surface of the second support plate (17).

6. A dehumidification device for a pitch system according to claim 4, characterized in that: A placement groove (19) is provided on the upper surface of the top seat (16), and a second dustproof screen plate (20) is movably connected inside the placement groove (19).

7. A dehumidification device for a pitch system according to claim 4, characterized in that: The top of the outer surface of the top seat (16) is fixedly connected to a cylinder seat (21), the interior of the cylinder seat (21) is slidably connected to a limit plate (22), the upper surface of the limit plate (22) is fixedly connected to a plug rod (23), one end of the plug rod (23) is fixedly connected to a pressure plate (24), and the outer surface of the plug rod (23) is sleeved with a spring (25).

8. The dehumidification device for a pitch system according to claim 1, characterized in that: Both sides of the front side of the housing (1) are hingedly connected with cabinet doors (26) via hinges, and a transparent window (27) is fixedly connected to the middle of the front side of the cabinet door (26).

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